Computer Network and Topologies Flashcards
the study of geometric properties and spatial relations unaffected by the continous change of shape or size of figures.
Topology
layout of a computer network.
Topology
Kinds of Network Topology
(6)
- Bus
- Ring
- Star
- Mesh
- Hierarchical
- Extended Star(same with Hierarchical???)
each computer and network device is connected to a single cable or backbone.
Bus Topology
Advantages:
* works well for small network.
* easiest network topology.
* requires less cable length.
Disadvantages:
* difficult to identify problems if the whole network goes down.
* hard to troubleshoot individually.
* additional devices slows the network.
* not great for large networks.
* Terminators are required for both ends
* if main cable is damaged, network fails
device connections create a circular data path.
Ring Topology
Advantages:
* all data flows in one direction
* high speed data transfer
Disadvantages:
* entire network will fail if one shuts down.
* data must pass through each workstation on the network.
* the hardware needed to connect each one is more expensive than Ethernet cards.
every node connects to a central network device. The central acts as a server, while the connected devices as clients.
Star Topology
Advantages:
* centralized management.
* easy to add another computer
* will not shut down if one computer on the network fails.
Disadvantages:
* have a higher cost to implement.
* central network device determines the performance capabilities
* if central hub fails, entire network goes down.
each computer and network device is interconnected with one another. Commonly used for wireless networks.
Mesh Topology
- manage high amounts of traffic.
- does not cause a break in the network if one computer fails.
- adding addiotional device will not disrupt data.
Disadvantages:
* have a higer cost to implement.
* building and maintaining is hard and time consuming.
* chance of redundant connections is high.
additional networking device connected to the main networking device.
Also called the Extended Star Topology.
Hierarchical Topology
Types of Computer Networks(11)
- PAN- Personal Area Network
- LAN- Local Area Network
- WLAN- Wireless Local Area Network
- CAN- Campus Area Network
- MAN- Metropolitan Area Network
- WAN- Wide Area Network
- SAN- Storage Area Network
- SAN (also)- System Area Network
- POLAN- Passive Optical Local Area Network
- EPN- Enterprise Private Network
- VPN- Virtual Private Network
smallest and most basic type of network. Revolves around one person in one building.
PAN- Personal Area Network
connect groups of computers and low-voltage devices together across short distances.
LAN- Local Area Network
doesn’t require devices to rely on physical cables to connect to the network.
WLAN- Wireless Local Area Network
They can be spread across
buildings that are fairly close to each other so users can share resources. Larger than LAN’s but smaller than MAN’s.
CAN- Campus Area Network
span an entire geographic area. Larger than LAN’s but smaller than WAN’s.
MAN- Metropolitan Area Network
connects computers together across longer physical distances. Slightly more complex than a LAN.
WAN- Wide Area Network
